如何对使用 FormsAuthentication 的 ASP.NET MVC 控制器进行单元测试? [英] How can I unit test my ASP.NET MVC controller that uses FormsAuthentication?

问题描述

我正在以测试驱动的方式使用 ASP.NET MVC 解决方案，我想使用表单身份验证将用户登录到我的应用程序.我希望在控制器中最终得到的代码如下所示:

I'm working with a ASP.NET MVC solution in a test driven manner and I want to login a user to my application using forms authentication. The code I would like to end up with in the controller looks something like this:

FormsAuthentication.SetAuthCookie(userName, false);

我的问题是如何编写测试来证明这段代码的合理性?

My question is how do I write a test to justify this code?

有没有办法检查是否使用正确的参数调用了 SetAuthCookie 方法?

Is there a way to check that the SetAuthCookie method was called with the correct parameters?

有没有办法注入一个假的/模拟的 FormsAuthentication?

Is there any way of injecting a fake/mock FormsAuthentication?

推荐答案

我会先写一个接口和一个封装这个逻辑的包装类，然后在我的控制器中使用这个接口:

I would start by writing an interface and a wrapper class that will encapsulate this logic and then use the interface in my controller:

public interface IAuth 
{
    void DoAuth(string userName, bool remember);
}

public class FormsAuthWrapper : IAuth 
{
    public void DoAuth(string userName, bool remember) 
    {
        FormsAuthentication.SetAuthCookie(userName, remember);
    }
}

public class MyController : Controller 
{
    private readonly IAuth _auth;

    public MyController(IAuth auth) 
    {
        _auth = auth;
    }

}

现在 IAuth 可以在单元测试中轻松模拟，并验证控制器是否调用了预期的方法.我不会对 FormsAuthWrapper 类进行单元测试，因为它只是将调用委托给 FormsAuthentication 执行它应该做的事情(微软保证:-)).

Now IAuth could be easily mocked in a unit test and verify that the controller calls the expected methods on it. I would NOT unit test the FormsAuthWrapper class because it just delegates the call to the FormsAuthentication which does what it is supposed to do (Microsoft guarantee :-)).

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